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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2009, Vol. 10 Issue (3): 353-360    DOI: 10.1631/jzus.A0820286
Civil and Mechanical Engineering     
Adaptive finite element-element-free Galerkin coupling method for bulk metal forming processes
Lei-chao LIU, Xiang-huai DONG, Cong-xin LI
National Die and Mould CAD Engineering Research Center, Shanghai Jiao Tong University, Shanghai 200030, China
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Abstract  An adaptive finite element-element-free Galerkin (FE-EFG) coupling method is proposed and developed for the numerical simulation of bulk metal forming processes. This approach is able to adaptively convert distorted FE elements to EFG domain in analysis. A new scheme to implement adaptive conversion and coupling is presented. The coupling method takes both advantages of finite element method (FEM) and meshless methods. It is capable of handling large deformations with no need of remeshing procedures, while it is computationally more efficient than those full meshless methods. The effectiveness of the proposed method is demonstrated with the numerical simulations of the bulk metal forming processes including forging and extrusion.

Key words： Meshless method      Adaptive coupling method      Bulk metal forming      Numerical simulation     
Received: 15 April 2008     
CLC:  TG3  
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Lei-chao LIU
Xiang-huai DONG
Cong-xin LI
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Lei-chao LIU, Xiang-huai DONG, Cong-xin LI. Adaptive finite element-element-free Galerkin coupling method for bulk metal forming processes. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2009, 10(3): 353-360.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.A0820286     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2009/V10/I3/353

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